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Description

The L6566B is an extremely versatile current-mode primary controller ICs, specifically designed for high-performance offline flyback converters. It is also suited for single-stage single-switch input-current-shaping converters (single-stage PFC) for applications supposed to comply with EN61000-3-2 or JEITA-MITI regulations.

Features

■ Selectable multi-mode operation: fixed frequency or quasi-resonant

■ On-board 700 V high-voltage start-up

■ Advanced light load management

■ Low quiescent current (< 3 mA)

■ Adaptive UVLO

■ Line feedforward for constant power capability vs mains voltage

■ Pulse-by-pulse OCP, shutdown on overload (latched or autorestart)

■ Transformer saturation detection

■ Programmable frequency modulation for EMI reduction

■ Latched or autorestart OVP

■ Brownout protection

■ -600/+800 mA totem pole gate driver with active pull-down during UVLO

■ SO16N package

Applications

■ Hi-end AC-DC adapter/charger

■ LCD TV/monitor, PDP

■ digital consumer, IT equipment

■ single-stage PFC